Google's new artificial intelligence (AI) search feature is facing criticism for providing erratic, inaccurate answers.

Its experimental "AI Overviews" tool has told some users searching for how to make cheese stick to pizza better that they could use "non-toxic glue".

The search engine's AI-generated responses have also said geologists recommend humans eat one rock per day.

A Google spokesperson told the BBC they were "isolated examples".

Some of the answers appeared to be based on Reddit comments or articles written by satirical site, The Onion.

They have been widely mocked on social media.

But Google insisted the feature was generally working well.

"The examples we've seen are generally very uncommon queries, and aren’t representative of most people’s experiences," it said in a statement.

"The vast majority of AI overviews provide high-quality information, with links to dig deeper on the web."

It said it had taken action where "policy violations" were identified and was using them to refine its systems.

It is not the first time the company has run into problems with its AI-powered products.

In February, it was forced to pause its chatbot Gemini which was criticised for its "woke" responses.

Gemini's forerunner, Bard, also got off to a disastrous start.